Improvement in portable forge



I @fitta tre JOHN B. BOLINGER, OF DETROIT, MICHIGAN, ASSIGNOR TO. HIM- SELF AND L. R. FITCH, OF ASAME PLACE;

Laim Patent No. 84,048, dated Nownbw 17, 1.868.

IMPROVEIMIENT IN PORTABLE FORGE.

To c zll 'whom 'it 'may concern g Be it known that I, JOHN B. BOLINGER, of Detroit, in the county of Wayne, and State of Michigan, have invented a new and improved Fan-Blast Portable Forge; and I do hereby declare that the following is a full, clear, and exact description thereof', which will enable those skilled in the art to make and use the same, reference being had to theaccompanying drawings, forming pal-tof this speciiication.

This invention relates to an improvement in the means of supplying the air-blast to a portable 'smiths forge; and it consists inthe arrangement of the parts lof which it is composed, whereby simplicity of construction and effectiveness of operation are secured, whilethe apparatus or working-parts thereof are not liable to get out of o1-der.

FigureA l represents a sectional side elevation of the forge, showing'the parts of which it is composed in their relative positions, the section being through the line y y of iig; 2.

Figm'e 2 is atiansveise vertical section of fig. l, through" the line x x.

Similar letters of reference indicate corresponding parts.

A is the forge-frame.

B is the fire-box or forge proper. I `C represents the driving-pulley, which isrevolved either by the foot or hand of the operator.

D is a double lever, whose fulcrum is at E on the frame.

.lhi's lever has a slotted arm, F, in which the wrist of the driving-pulley-crank shaft G Works.

h is the foot-piece on the lever, and

i is the hand-lever.

J represents the chamber in which the fans revolve.

k `are the fans.

L is the fan-shaft.

The fan-shaft revolves on points or bearings.

In this example of my invention, the shaft revolves on points.

The inner end is supported by the fan-casing, and the outer end by an adjustable set-screw, m, in a projecting arm, n. Y

o is a pulley on the fan-shaft, and

p and q are intermediate pulleys, attached to an adjustable arm, R, as distinctly seen in fig. 2.

The pulleys named are all friction-pulley`s, with V- faces, seen inthe drawing, but other friction-pulleys may be used, if desired.

The pulleys o and q are made adjustable, for the purpose of increasing or diminishing the friction.

The pulleys o and gare of peculiar formation, the' body of these pulleys being formed of r'ubber or some other elastic substance, with `a rim of metal thereon, so that-those pulleys, although with a metallic rim, are made elastic.

S is the chamber beneath the fire-box B, which receives the air from the fan.

The blast is discharged through the central orifice T.

The blast is regulated by the screw u, which passes up from the bottom, with a ball, v, upon its upper end, as seen in the drawing.

This ball itsthe globular cavity below the dischargeorifice T, and the blast is regulated by turning the screw u up or down, as may be required.

Having thus described my invention,

I claim as new, and desire to secure by Letters latent- 1. The pulleys o and q, formed of rubber, with metallic faces or peripheries, substantially as described, in combination with the pulleys C and p.

2. In combination with a portable fan-blast forge, the air-chamber S, the double lever D, and the slotted arm F, operating on the crank G, all constructed and arranged substantially as and for the purposes de-` scribed.

J. B. BOLINGER. Witnesses: k

EUGENE Fnolr, JN0. It. Franny: 

